After reading the reviews, which I did not find all that positive, I went ahead and purchased this product anyway. I have tried several similar items that just don't quite do it for me. When I got it and installed batteries and turned it on, I thought "Darn, the reviews were right in that there is really no 'umph' to this thing". Well, I proceeded to try it and all I can say is HOLY COW. In less than one minute I achieved my goal, which was quite surprising and a little disappointing. Each and every time I use this, it is powerful enough that results arrive in a minute or less. This device is perfect for those quickie moments or if you are just not interested in prolonging things. Also, I think the little nubbies hold lubricant on the surface much better than other products, they are shaped differently than other products I have used with nubbies.